I have a Pause button on an animation that needs to stop the
main timeline from moving, as well as any Movie Clips that are
currently playing. I have the button set up and it stops the main
timeline, as well as TWO of the MCs (?!), but there are several
more it does not affect.

All of the MCs that need to be Pausable have instance names,
which I've tried to reference (even using the Targeting icon to
pick the MC from a list, but none of the below formats work.

In addition to the Main timeline, I can Pause TWO of the MCs
(two instances of the same MC from the library), but not the
others. There's nothing special/different about the unPausable MCs
compared to the Pausable ones.

These are some of the syntax variations I've tried to
reference the MCs, which play from the main timeline.